Method for selecting map information, and navigation device

Abstract

Proposed is a method and a navigation device, a method for selecting map information from a digital map on the basis of a predefined polyline being used on the digital map, and, in addition to the information defined by the polyline, the map information including further information regarding a route corridor.

1. A method for selecting map information from a digital map, comprising:
 providing a predefined polyline that defines information;  
 selecting map information that includes a route corridor as a function of at least one parameter; and  
 if the at least one parameter provides for the selected map information being tolerant of an error, guiding a driver on one of a side route and an alternate route, wherein one of: 
 the at least one parameter provides for the selected map information to be tolerant of multiple errors in a starting region and a destination region of the predefined polyline, and  
 the at least one parameter provides for the selected map information to be tolerant of at least one error as a function of a class of a road.  
 
 
     
     
       2. The method according to  claim 1 , wherein the at least one parameter provides for the selected map information to include a navigational instruction. 
     
     
       3. The method according to  claim 1 , further comprising:
 formatting the navigational instruction to lead back to at least one of a destination via the alternate route and to the predefined polyline on one of a shortest route, a quickest route, and a most efficient route.  
 
     
     
       4. A method of using a navigation device including a memory and a navigation computer, comprising:
 a storing in a memory selected map information, the selected map information being selected by:  
 providing a predefined polyline that defines information,  
 selecting map information that includes a route corridor as a function of at least one parameter, and  
 if the at least one parameter provides for the selected map information being tolerant of an error, guiding a driver on one of a side route and an alternate route, wherein one of: 
 the at least one parameter provides for the selected map information to be tolerant of multiple errors in a starting region and a destination region of the predefined polyline, and  
 the at least one parameter provides for the selected map information to be tolerant of at least one error as a function of a class of a road; and  
 
 
       causing the navigation computer to generate a navigational instruction. 
     
     
       5. The method according to  claim 4 , wherein the at least one parameter provides for the selected map information to include a navigational instruction. 
     
     
       6. The method according to  claim 5 , further comprising:
 formatting the navigational instruction to lead back to at least one of a destination via the alternate route and to the predefined polyline on one of a shortest route, a quickest route, and a most efficient route.